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Is a glaze with higher iron oxide levels, create more of a bubble effect as a end result? Help!


claudia nicole

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bubbly.pdf

Hello, hi !

I've been a bit lost and what seems to be a loop when looking to re-create this glaze somehow. I'm pretty fresh to pottery, and am willing to take any and all information to help me understand what creates this effect and if this piece is done by using two different types of glazes. For example a white over gray glaze with a higher levels of iron oxide?

 

Thank you kindly 

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Hi Claudia!

Am guessing not actual bubbles (trapped gases) in the glaze? ...the image is somewhat low res; looks like variegation or mottling.

Perhaps Tony Hansen's article could be a starting point:
Oil-spot glaze (digitalfire.com)

I'm using two glazes that contain rutile, which helps produces a variegated appearance; here's Hansen's article on reactive glazes:
Reactive Glazes (digitalfire.com)

See also phase separation, and note that while traditional iron reduction glazes don't "work" in electric kilns, there are alternatives that look similar...

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